Pneumatic spring vibration damper assembly unit

Details Pneumatic spring vibration damper assembly unit Pneumatic spring vibration damper assembly unit

2005-07-01

2009-02-10

Torres, Melanie (Department: 3657)

Spring devices

Vehicle

Comprising compressible fluid

C267S064270, C267S064190, C267S122000, C267S064210, C188S322220, C188S321110

Reexamination Certificate

active

07487957

ABSTRACT:
A pneumatic spring-vibration damper unit is provided for absorbing shocks on wheels and chassis parts of motor vehicles. A variable air chamber is delimited by a rolling bellows which is disposed between a first subassembly that is fixed to the vehicle body and is provided with a vibration damper system and a second subassembly that is fixed to the vehicle chassis and is movable therewith. A piston rod connects the first subassembly located at the vehicle body end and the second subassembly located at the chassis end and whose free end located at the vehicle body end is accommodated inside a cylinder tube of the vibration damper system so as to be longitudinally movable by means of a piston. The piston rod (8) is guided within the cylinder tube (6) of the vibration damper system (2) so as to be longitudinally movable with the aid of a drag bearing arrangement (13). This allows the longitudinal axis of the piston rod to be angularly deflected relative to the central longitudinal axis (18) of the cylinder tube (6) while a joining element (10) which is fastened to the piston rod (8) and the piston (9) by a respective ball-and-socket joint unit (11, 12) is positioned between the piston rod (8) and the piston (9).

REFERENCES:
patent: 2379388 (1945-06-01), Thornhill
patent: 3638769 (1972-02-01), Cohen
patent: 4325541 (1982-04-01), Korosladanyi et al.
patent: 5996980 (1999-12-01), Frey et al.
patent: 7226045 (2007-06-01), Brookes
patent: 199 59 839 (2000-07-01), None

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